Mateo Cerri

tinkerer.

I take things apart to see what else they could become. I touch a bit of everything, from build caches in Rust to vision models to file formats I had no business decoding by hand, and I prefer showing commits over collecting labels.

Advanced Computer Engineering student at UNRaf, working from Rafaela, Argentina. I take on selected freelance work. Remote, async-friendly; details on the contact page.

Now

what occupies the bench

Most days go to my final project: automatic visual inspection for metal parts, training on a public benchmark and validating against real rejected pieces, running on CPU with a local panel. In the margins, a private Rust project around AI-assisted game creation (more when it is public) and the small utilities below.

Work

things built, each with its receipts

• oct 2026Tools that show their work

  Coding agents that edit through opaque shell writes are unauditable, so I gave mine visible tools:anchor-based atomic editsanda registry of reusable scripts. One call renamed a type across 70 files. Same family:a trace pruneranda WSL toolchain shim.

• sep 2026A daemon that records streams once

  hlsd records HLS sources so that every segment is fetched exactly once and shared between overlapping recordings, assembling MP4 on demand. It complements yt-dlp where no extractor exists.

• 2026 – nowA wholesale store I still run

  A custom e-commerce platform for a wholesaler,Beccaria Mayorista: storefront, admin tools, order flows. I designed and deployed it, and I still maintain it(Astro, React, AdonisJS, PostgreSQL).

Recent writing

from the blog

Experiments

an ongoing habit

I like finding out how things work: sitting with a spec until bytes become pixels, wiring a sensor just to watch it report back. Most of these never shipped and several stalled halfway, done the hard way with barely any autocomplete. The understanding was the point, not the release. The habit stuck.

Record

for the scanners

• 2021 – nowComputer Engineering, UNRaf

  B.S. in progress. Final project: automatic visual inspection for metal parts.

• 2026 – nowIndependent developer

  Custom e-commerce platform for a wholesaler: designed, deployed, maintained.

• 2024 – 2025Huawei ICT Competition, second prize

  Cloud track.

• 2024 – 2025AWS Academy graduate ×3

  Cloud Architecting, Machine Learning for NLP, Cloud Foundations.